1. He knows Africa well because he (travel) a lot there.
A has been travelling
B has travelled

2. You (write) this composition for two hours and can't complete it.
A have been writing
B have written

3. – John is still repairing his car.
– He must be tired. He (repair) it all day.
A has repaired
B has been repairing

4. Alice promised to come, but she's absent. Something (happen) to her.
A has been happening
B has happened

5. The children are drawing. They (draw) since they came home.
A have been drawing
B have drawn

6. ... they (tell) anything about their summer plans?
A Have they been telling
B Have they told

7. My aunt (have) the big house in the country.
A has always been having
B has always had